different database for gridfs

[Furqankhanzada]

I want to save images to different database instead of default one.

I have changed the collection driver and now images collection is being created on different database but not others collections that hold files.

check my code:

if(Meteor.isServer){
    var d = new MongoInternals.RemoteCollectionDriver('mongodb://test123:test123@ds029725.mlab.com:29725/test');
    Images = new Mongo.Collection('images', { _driver: d });
}else{
    Images = new Mongo.Collection('images');
}

function loggedIn(userId) {
    return !!userId;
}

Images.allow({
    insert: loggedIn,
    update: loggedIn,
    remove: loggedIn
});


ImagesStore = new UploadFS.store.GridFS({
    collection: Images,
    name: 'images',
    filter: new UploadFS.Filter({
        contentTypes: ['image/*']
    })
});

any suggestion or help ? how can i achive it ?

[jalik]

Hi @Furqankhanzada I guess, you would have use the copyTo store option, do something like this :

let options = {};

if (Meteor.isServer) {
    options._driver = new MongoInternals.RemoteCollectionDriver('mongodb://test123:test123@ds029725.mlab.com:29725/test');
}
ImagesCopy = new Mongo.Collection('images', options);
Images = new Mongo.Collection('images');

function loggedIn(userId) {
    return !!userId;
}

let imageFilter = new UploadFS.Filter({
    contentTypes: ['image/*']
});

let permissions = new UploadFS.StorePermissions({
    insert: loggedIn,
    update: loggedIn,
    remove: loggedIn
});

ImagesCopyStore = new UploadFS.store.GridFS({
    collection: ImagesCopy,
    name: 'images-copy',
    filter: imageFilter
});

ImagesStore = new UploadFS.store.GridFS({
    collection: Images,
    name: 'images',
    filter: imageFilter,
    permissions: permissions,
    copyTo: [ImagesCopyStore]
});

EDIT : you cannot set several collections on one store because each store could have different data for the same file (if it has been modified for example), so each store need a different collection, you can use store like normal storage, backup storage or to save alternative version of a file (thumbnail, archive, etc), so even if you save twice the same file, it leads to 2 physical files, this is why you need two collections, one per store, I hope I am clear.